Mohammed Zakariya – an American master of Arabic calligraphy, best known for his work on the popular Eid U.S. postage stamp.

Moralı Enişte Hasan Pasha – Greek Ottoman Grand Vizier.

Muhammad Abd-al-Rahman Barker (Philip Barker) – professor of Urdu, former chair of the University of Minnesota’s Department of South Asian studies and creator of the Tékumel fantasy world.

Muhammad Ali (formerly Cassius Clay), from Baptist to The Nation of Islam to sufism Islam. famous boxer.

Muhammed al-Ahari born January 6, 1965 as Ray Allen Rudder is an American essayist, scholar and writer on the topics of American Islam, Black Nationalist groups, heterodox Islamic groups and modern occultism.

Salman the Persian A convert from Christianity[148] who was previously Zoroastrian.

Sana al-Sayegh, dean of the Science and Technology Faculty at Palestine International University, converted to Islam in August 2007. Fatah has accused its political rival Hamas of forcing the professor to convert from Christianity, a charge Hamas denies.[149]

Shah Shahidullah Faridi – Writer of German descent born to a Christian family.[152]

Sheila Musaji – founder of The American Muslim magazine.[153]

Silma Ihram – formerly a born again Baptist who is an Australian pioneer of Muslim education in the West, founder and former school Principal of the ‘Noor Al Houda Islamic College’, campaigner for racial tolerance, and Author.[154]

Tariq Abdul-Wahad (Olivier Saint-Jean) – originally from France, former basketball player for the Mavericks and Kings[160]

Tawana Brawley (changed her name to Maryam Muhammad) – African American woman noted for claiming to have been raped by several white men, a claim determined to be a fabrication by a grand jury. Later in life she converted to Islam.[161][162][163]

Tekuder – Mongol leader of the Ilkhan empire who was formerly a Nestorian Christian.[164]

Thomas J. Abercrombie – photographer[165]

Timothy Winter – prominent British Islamic thinker and scholar, and a lecturer in Islamic studies in the Faculty of Divinity at the University of Cambridge.[166]

From Hinduism

Dhiren Barot – Born in India to a Hindu family, Barot was later sentenced to 40 years in prison in the United Kingdom for conspiracy to murder. Barot admitted to plotting to bomb the New York Stock Exchange, the International Monetary Fund headquarters, and the World Bank, amongst other targets.

Divya Bharti – Indian actress who converted on marriage to producer Sajid Nadiadwala

Jalaluddin Muhammad Shah – son of Raja Ganesha; he converted to Islam, then to Hinduism and finally reverted back to Islam, and later introduced Islam to many Hindus.[206]

Ibrahim Savant – one of the suspects arrested in the UK in connection to the 2006 transatlantic aircraft terrorist plot in the United Kingdom.[288]

Idris Muhammad – American jazz musician.[289]

Iliaş Colceag – Moldavian military commander in the Ottoman and Russian Empire.

Isabelle Eberhardt – explorer and writer.[290]

J

Jack Roche – convicted of involvement in an al-Qaeda plot to blow up the Israeli embassy in Canberra.[291]

Jadel Gregório – a Brazilian athlete.

James Achilles Kirkpatrick – was the British Resident in Hyderabad.[292]

Jan Janszoon – Dutch pirate.[293]

Jason Walters – of the Netherlands, member of the Hofstad Network, convicted on charges of terrorism.[294]

Jeff Fort – former Chicago gang leader, co-founder of the Black P. Stones gang, and founder of its El Rukn faction. He was convicted in 1987 of conspiring with Libya to perform acts of domestic terrorism.[295][296]